openaire-graph-docs/versioned_docs/version-5.1.2/data-model/data-model.md

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# Data model
The OpenAIRE Graph comprises several types of [entities](../category/entities) and [relationships](/category/relationships) among them.
The latest version of the JSON schema can be found on the [Downloads](../downloads/full-graph) section.
<p align="center">
2023-04-21 16:20:39 +02:00
<img loading="lazy" alt="Data model" src={require('../assets/img/data-model-2.png').default} width="80%" className="img_node_modules-@docusaurus-theme-classic-lib-theme-MDXComponents-Img-styles-module"/>
</p>
The figure above, presents the graph's data model.
Its main entities are described in brief below:
* [Results](/data-model/entities/result) represent the outcomes (or products) of research activities.
* [Data Sources](/data-model/entities/data-source) are the sources from which the metadata of graph objects are collected.
* [Organizations](/data-model/entities/organization) correspond to companies or research institutions involved in projects,
responsible for operating data sources or consisting the affiliations of Product creators.
* [Projects](/data-model/entities/project) are research project grants funded by a Funding Stream of a Funder.
* [Communities](/data-model/entities/community) are groups of people with a common research intent (e.g. research infrastructures, university alliances).
:::note Further reading
A detailed report on the OpenAIRE Graph Data Model can be found on [Zenodo](https://zenodo.org/record/2643199).
:::